Backpack water spray tank



FIG. 1 is a perspective view of a new and ornamental design for abackpack water spray tank;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a first side elevation view thereof;

FIG. 5 is a second side elevation view thereof;

FIG. 6 is top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view of a person wearing the backpack waterspray tank with the person shown in phantom lines for environmentalpurposes only and forming no part of the claimed invention.

The broken lines shown on portions of the backpack water spray tankrepresent stitching.

CLAIM The ornamental design for a backpack water spray tank, as shownand described.